Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
Chapters lets you create and manage multiple notebooks, each fully searchable and with its own settings.
$1.99
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Chapters - Notebooks for Writing: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: Limited organization options for notes and chapters.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of collaboration features.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No cloud sync options.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic formatting options.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Chapters lets you create and manage multiple notebooks, each fully searchable and with its own settings. Keep a travel journal, a photo log, a notebook about ongoing work projects, and your own personal diary in one app. Manage writing projects. Create as many notebooks as you want and fill each with as much as you need to write. Choose a color theme, font, text color, and page color for each notebook. Focused writing. Multiple photos per entry that you can move, resize, rotate - your words flow around them. Reliable storage, autosave, and passcode lock protect your words; share or read them on your computer with PDF, text, and email export. You can also create backups and save them to other apps such as Dropbox, Drive, and Evernote. Add a passcode to lock the app and keep your writing private. Enable word count to see how much you've written. You can also enable the extra keyboard buttons to jump forward and backward by word or character with a single tap, saving you time so you can focus on writing. Work while using other apps with support for Slide Over and Split View multitasking on iPad. Not interested in managing multiple notebooks? Have a look at Chronicle, an app that focuses on keeping a single personal journal. Chapters can import .backup files from Chronicle (as well as the .cbackup files from the older Chronicle2 app) FEATURES * Create as many notebooks as you need to group related writing * Notebook themes (Classic color and 7 new colors) * Put photos where you want. The text wraps around them. * No limit to the number of photos you can put on the page * Pick a font and font size just like you do in iBooks * Customize the text color of your journal * Easy back-dating; tap to adjust the entry date as needed * Resize and rotate photos. Tap for a fullscreen, zoomable version. * Customize your journal's page color * Crisp PDF export preserves layout and photo placement * Export your entire journal as a plain text file * Fast search that provides context around keywords * Distraction free writing in portrait or landscape mode * Support for Dynamic Type means text is never too small to read * Extended keyboard makes it easy to insert timestamps into your writing * Turn word count on to see a total as you type * Optimized scrolling; scroll back a whole year in a few seconds * Set a password to protect your journal entries * Export single entries via email, with photos embedded * Chapters remembers where you were in each notebook * Arrange your photos by dragging them; rotate with two fingers * Autosave and undo while you're writing Please note that drawing/handwriting aren't supported. ACCESSIBILITY Stop squinting. In addition to being able to adjust the journal's font size, you can change the system's Text Size from the Settings app to make the UI text in Chapters easy to read. I've also added accessibility and VoiceOver improvements. SUPPORT Contact me at slidetorock.com with questions / suggestions.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.